Rumor says: due to the increasing application of high-tech products such as smart phones and computers and the change of living environment, human beings will have taller heads, smaller brains, bigger eyes, fewer teeth, longer arms and more wrinkles. After a thousand years, human beings will not become more handsome, but will look like "weirdos"!

Shell network rumor encyclopedia one:

Fake. This is a piece of news fabricated by the tabloids.

Parameters:

First of all, the news is not credible. The Sun is a famous tabloid. Everyone knows, but then I interviewed some dentists, plastic surgeons and so on, and none of them were engaged in evolution.

It's no use wasting it in there. There is no direct relationship between overuse and development, and underuse and demotion.

Factor 1: acquired cultural influence.

I bet this reason has the greatest effect. There is nothing to say about fashion. The field of cosmetic surgery is so powerful now, and it will be even more powerful if there is genetic modification in the future. Then if one day everyone wants to add eyes to their foreheads, wings to their backs and four arms under their arms, then we have nothing to say. Aesthetic fashion has never been meaningful.

Related to this is the state of daily life: when you are full, you will naturally grow taller and fatter. If the world encounters disasters and agriculture collapses in the future, the population will become thinner and smaller. When this factor meets aesthetics, it is unpredictable who will have the advantage.

But there is no doubt that once this factor is brought into full play, it will directly overwhelm all other factors, and we don't have to look down.

Factor 2: sexual selection.

In fact, it is similar to the above, and it is also an aesthetic trend, but it is acquired above and innate below. If the pressure of human aesthetic choice in mate selection is strong enough, so that the number of rich offspring in Gao Shuai obviously exceeds that of poor and short ones, then after a long time, there will be more Gao Shuai (wealth is not necessarily) in the world.

But what if the middle aesthetic trend changes ... Although this aesthetic has a certain biological background, it should be more stable than the fashion of jeans and tears, but it is difficult to guarantee that it will not be reversed. Therefore, the future is still unpredictable.

Since the above are unpredictable at all, we assume that they are not valid here. Although if they play, they can easily drown out all other factors ...

Factor 3: Existing options continue.

Natural selection takes time to complete. Perhaps some selection forces have been going on, and its corresponding environment has not changed, so it will continue to play a role. For example, in the past/kloc-0.0 million years, the human brain has been gradually getting smaller. We don't fully know why, but if this reason remains unchanged, our brains will become smaller again in another 1 million years.

What if this reason changes? See 4.

Factor 4: Choose to change, especially choose to relax.

Once the environment changes and the pressure of choice changes, the direction of human evolution will certainly change. In particular, choose to relax: people who once possessed certain characteristics can't survive or have no offspring. Now with medical factors, these people can leave their offspring, so these related characteristics may be added to the human gene bank family, thus affecting the overall characteristics.

In other words, a gene that was once harmful is now neutral. In the past, harmful genes could not spread, but now they have become (near) neutral genes, which is a random drift. It may still be extinct, it may be temporarily stable, and it may eventually spread to unify the whole country. These are all events that depend entirely on probability.

But whether the change of choice will happen depends entirely on what kind of choice we are facing now. This requires very specific research. Without research, we can only guess out of thin air.

For example, if there is such a gene that makes a woman's pelvis too narrow, then the dystocia rate of women with this gene is much higher. Previously, natural selection opposed the survival of this gene. But now that we have caesarean section, everyone can have a baby normally, so this gene may survive for a long time. There are more women with pelvic stenosis in the crowd, and the average pelvis will be smaller.

But this requirement is very high: the effect of natural selection must change obviously, and this effect must be reflected in the number of offspring. There is little clear evidence that natural selection has changed because of the factors given in the original post. For example, there may be a gene that makes us less susceptible to diabetes, but most modern diabetes is acquired after childbearing age, which affects life expectancy, but does not affect the number of your children. Then this gene can hardly be selected.

In short, if you can give me a complete picture of the future society, including their economy, culture, history and aesthetic fashion, you can also predict what their human beings will be like. It is predicted out of thin air that 1000 years later, this is not a science, but an Oracle.

Editor's note: The Eight Diagrams Encyclopedia is a brand-new platform for the development of shells. It aims to establish the largest "scientific gossip database" on the Internet in China by crowdsourcing. Interested readers click here to see.